1/30/2024 0 Comments Python enumFind the difference between the sum of ASCII value of all vowels and the sum of ASCII value of all consonants. Problem 2: Given a string of only lowercase characters. In this problem, we will enumerate the list, and then based on the enumerated counter value of each object of the list we will find the sum of the values.įor counter, value in enumerate(num_list, start=1): if counter % 2 = 0: total_sum += value Problem 1: Find the sum of all even index values in Python. If you want to assign values in a difference of 2 or 3, then you have to use a for loop. For example, i, i+1, i+2, i+3, i+4 and so on. enumerate() only counts in a consecutive way, i.e., start from any number i and then increment it by 1.enumerate() helps in avoiding the off-by-one error or off-by-one bug.enumerate() has the flexibility to start counting from any number you want by specifying the value of the start parameter.It avoids the use of for loop and thus makes the code a little bit cleaner. enumerate() is a Pythonic way of counting the list of objects. ''' Output: 5 6 7 0 Cpp 1 Java 2 Python 0 HTML 1 Javascript 2 CSS 0 Python 1 R 2 Julia ''' Strengths and Weaknesses of the enumerate() Function in Python User_skill_list =, , ]Įnumerated_user_skill_list = enumerate(user_skill_list, start=5) # Enumerate double dimension list for counter, language_list in enumerated_user_skill_list: print(counter, language_list)Įnumerated_object_list = # enumerating each list object in user_skill_listįor enumerated_object in enumerated_object_list: for counter, lang in enumerated_object: print(counter, lang) Let’s see how we can enumerate each value of the list. Here, we have implemented a two-dimensional list of programming languages. We have already covered a 1D list in the example above. This can be done by passing each instance of the list object to enumerate() and keeping records of each enumerated object for further processing. Not only one-dimensional lists, but we can enumerate any list irrespective of the dimension. List is an iterable data structure and hence can be enumerated. User_skill_list = enumerate_object = enumerate(user_skill_list) # Excluding start parameter print(type(enumerate_object)) # Output: Įnumerate_list = list(enumerate_object) # Convert enumerate object to listĮnumerate_object = enumerate(user_skill_list, start=5) # Defining start parameter for enumerated_language in enumerate_object: print(enumerated_language) ''' Output: (5, 'Cpp') (6, 'Java') (7, 'Python') ''' Enumerating a List in PythonĪs you know, Python’s enumerate() allows you to enumerate every iterable data structure. If not passed, its value will be 0.Įnumerate() returns an enumerated object, which is iterable, and it can also be converted into other iterable data structures such as list and tuple. iterable: List, tuple, set, or any data structure that supports iteration.Parameters of enumerate()Įnumerate() accepts two arguments: iterable and start. So we’re basically assigning a number to each planet’s name or, in other words, we’re enumerating the planets. If we consider the order from left to right, we can say that the first planet is Mercury and the eighth is Neptune. Python’s enumerate() function helps you keep count of each object of a list, tuple, set, or any data structure that we can iterate (known as iterable).įor example, suppose we have a list of planets (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune). Strength and weakness of the enumerate() function in Python.Built-in enumerate() function in Python.In this article, we’ll cover how enumeration works in Python: It is simply assigning a unique identifier to every object of the list or counting the list of objects one by one in order. It provides serial order to a list of objects. Enumeration, by definition, means defining the list of things in terms of numbers, one by one.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |